Re: Speed of light
Surely radio waves travel at the speed of sound? Whereas the magical digital DAB stuff is doing light. But like the tortoise and the hare - it's showing off by running in circles round the chips. Plus it's got to go off to somewhere to find that weird underwater popping noise that only DAB makes - I reckon there are giant bubblewrap farms in the arctic - and it's going there that takes all the extra time and so is why analogue signals are quicker.
The advantage of the DAB delay is that it often matches the TV delay - so you can have the radio commentary when watching sport. Not possible with analogue, as that tells you what happens beforehand.